If it were before his secluded Alchemy practice, Eric would have most probably thought twice before saving the life of Cui Xie, as the price in SP points would be just that high.
But now that wasn't a problem anymore, as all he had to pay for were the ingredients and his time in concocting the potions.
It didn't mean that they were free, but at least many times more affordable. At the same time he used this occasion and Cui Xie as his testing subject.
The results were pretty satisfying as not only had the blood leaking stopped, but Cui Xie's wound had recovered by 60% and he was out of any life danger.
It was quite the miracle! If a doctor was there, he wouldn't have believed such a miracle happen in front of his eyes, and he would have either called it a hoax, or treat Eric as the God himself.
As for the man himself, he was just looking with a bit of excitement at the results of his hard work, and knowledge.